On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 48 on 2016-01-20 Note: Before Chrome 47, -webkit-isolate could lock up the browser. Since Chrome 19, the syntax from a previous version of the specification, where the isolate keyword could be used together with bidi-override, is allowed.
In Chrome Android version 48 on 2016-01-26
In Edge version 79 on 2020-01-15
In Firefox version 50 on 2016-11-15 Note: From Firefox 10 to Firefox 16 (inclusive), the isolate keyword could be used together with bidi-override, which was the syntax from a previous version of the specification. From Firefox 17, only one value is allowed. Use isolate-override instead the previous isolate bidi-override.
In Firefox for Android version 50 on 2016-11-15 Note: From Firefox for Android 10 to Firefox for Android 16 (inclusive), the isolate keyword could be used together with bidi-override, which was the syntax from a previous version of the specification. From Firefox for Android 17, only one value is allowed. Use isolate-override instead the previous isolate bidi-override.
Not in Internet Explorer
In Quest Browser version 5.0 on undefined
In Opera version 35 on 2016-02-02 Note: Before Opera 34, -webkit-isolate could lock up the browser. Since Opera 15, the syntax from a previous version of the specification, where the isolate keyword could be used together with bidi-override, is allowed.
In Opera Android version 35 on 2016-02-04
In Safari version 11 on 2017-09-19 Note: Before Safari 9, -webkit-isolate could lock up the browser.
In Safari on iOS version 11 on 2017-09-19 Note: Before Safari on iOS 9, -webkit-isolate could lock up the browser.
In Samsung Internet version 5.0 on 2016-12-15
In WebView Android version 48 on 2016-01-26
In WebView on iOS version 11 on 2017-09-19 Note: Before WebView on iOS 9, -webkit-isolate could lock up the browser.